BROWSE

Related Researcher

Author's Photo

Kwak, Ja Hun
Molecular Catalysis lab
Research Interests
  • Heterogeneous catalysis, molecular catalysis, ASlumima, zeolites

ITEM VIEW & DOWNLOAD

The different impacts of SO2 and SO3 on Cu/zeolite SCR catalysts

Cited 20 times inthomson ciCited 22 times inthomson ci
Title
The different impacts of SO2 and SO3 on Cu/zeolite SCR catalysts
Other Titles
The different impacts of SO2 and SO3 on Cu/zeolite SCR catalysts
Author
Cheng, YisunLambert, ChristineKim, Do HeuiKwak, JahunCho, Sung JunePeden, Charles H. F.
Keywords
Urea SCR catalysts; Cu/zeolite; SO2 and SO3 poisoning; NOx emission control; Durability; Deactivation
Issue Date
2010-06
Publisher
ELSEVIER SCIENCE BV
Citation
CATALYSIS TODAY, v.151, no.3-4, pp.266 - 270
Abstract
The different impacts of SO2 and SO3 on Cu/zeolite SCR catalysts were investigated by SCR performance tests and multiple characterization techniques including temperature programmed desorption (TPD), Xray photoelectron spectroscopy (XPS) and X-ray absorption fine structure (XAFS). The results indicate that a larger amount of highly dispersed CuSO4 formed in the zeolite catalysts (Z-CuSO4) upon SO3 poisoning, explaining the much more significant deactivation of the Cu/zeolite catalysts that were exposed to SO3 compared to poisoning by SO2. This paper provides the first demonstration that active sites of Cu/zeolite SCR catalysts involved in the storage and removal of sulfur can react with SO2 and SO3 in very different ways. In particular, the significant differences in the extent of sulfur uptake account for the considerably different impacts of SO2 and SO3 poisoning on the performance of Cu/zeolite SCR catalysts. (C) 2010 Elsevier B.V. All rights reserved
URI
Go to Link
DOI
10.1016/j.cattod.2010.01.013
ISSN
0920-5861
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
S0920586110000167.htm Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU